Electric razor



Dec; 3, 1% E. FAVELUKE 2,223,410

ELECTRIC RAZOR I Filed Feb. 25, 1939 2 Sheets-Sheet 1 INVENTOR, fuss/w:F14 VEL (/AE VWA/J VW ATTORNEY.

Dec. 3, l. E. FAVELUKE ELECTRIC RAZOR Filed Feb. 25, 1939 2 Sheets-Sheet2 f; 37 1 I 2 F 40 7 1| 3" u 5 .IF 2] Iiglfi INVENTOR. EVGEA/E 774M;u/rE ATTORNEY.

Patented Dec. 3, 1940 UNITED STATES PATENT OFFICE 4 Claims.

This invention relates generically to power op erated shavinginstruments and specifically to brush-type, motor-operated razors whichprovide means for rapidly reciprocating a hair-severing 5 bladepositioned in coacting relationship to a stationary screened and slottedhead.

One of the objects of the invention is to provide a stationary screenedand slotted head possessing structural characteristics conducive tosevering the hair from the face as close as it is possible withoutdamaging the skin.

An equally important object of the invention is to provide a stationaryscreened and slotted head, the structural characteristics of which notonly allows the cutting of the'hair of the face but also permits theclipping of the hair from the neck and other portions of ones bodywhenever desired. 7

A further object of the invention is to provide a stationary screenedand slotted head substantially thin in cross section but made of strongand durable metal to resist wear and to permit the severing blade to cutthe hair as close as possible to the skin.

Another object of the invention is to provide a stationary screened andslotted head, the diameter of the openings in the screen portion and thewidth of the slots of which are substantially equal to the diameter ofthe average human hair and which is easily secured to or removed fromits operating position.

Another object of the invention is to provide a stationary screened andslotted head which acts as the carriage and support for the severing I5blade.

Still another object of the invention is the provision of. means forremovably securing the stationary screened and slotted head to thecasing of the razor.

.0 An object of the invention as important as any of those heretoforementioned is the provision of a severing blade possessing structuralcharacteristics for permitting not only the cutting of the hair from theface without injury to the skin but- 5 also the shearing or clipping ofhair from other parts of the body.

An equally important object of the invention is to provide means forrapidly reciprocating the severing blade in a substantiallyhorizontalplane. Another object of the invention is to provide a stationaryscreened and slotted head and a severing head cooperatively associatedtherewith, the working face of each being disposed at two differentangles. i Still another object of the invention is to provide means forimmediately removing the severed hair from the vicinity of thestationary screened and slotted head and severing blade, said meansbeing adapted to cool the motor also.

Another object of the invention is to provide means for trapping the cuthair within the interior of the casing.

A further object of the invention is to provide means by which rotatabledriving motion is translated to reciprocating motion and is in turn 1transferred to the severing blade slidably disposed and coacting with astationary screened and slotted head.

Another object of the invention is to provide a bearing for the shaft ofthe motor which not 15 only resists wear but also assists in reducingnoise.

As the following detailed description of the invention unfolds itself,other objects and advantages inherent in the invention will become 20apparent, especially when the same is studied in conjunction with theaccompanying drawings which form a part of this specification and which,by way of example, illustrates the preferred mode by which the inventionmay be applied 25 in practice and in which:

Figure 1 is a side elevation, partially in section, of an electric razorembodying the principles of my invention;

Figure 2 is a perspective rear view of a sta- 30 tionary head embodyingthe principles of my invention;

Figure 3 is a perspective rear view of a movable cutting blade embodyingthe principles of my invention;

Figure 4 is a perspective view of the filter and filter-carrying frame;

Figure 5 is a fragmentary, sectional side view of the filter and itsframe, showing its position with respect to the motor housing and themeans 4 for holding the same in place;

Figure 6 is a plan view, partially in section, taken on line 6-6 ofFigure 1, looking in the direction indicated, showing the means used for5 transmitting reciprocatory motion to the cutting blade;

Figure 7 is a side elevation of the razor fully assembled, embodying theprinciples of my invention; and

Figure 8 is a view taken on the identical lines of Figure 6, but showinga slightly modified means employed for transmitting reciprocatory motionto the cutting blade. v

The same reference numerals and characters are employed in the severalfigures of the drawings to designate identical parts.

The invention consists of a cylindrical motor housing I fabricated fromany plastic, such as Bakelite, having an efficient electrical andthermal insulation factor. A motor of any desirable construction, butpreferably a brush-type motor, having the usual armature 2, field coil3, commutator 4 and adjustable carbon brushes 5, is confined within thehousing I. A bearing 6 is secured to the armature shaft 1 and ispositioned with respect to housing I so that no foreign substance canenter into the interior 8 of the housing I in which the motor islocated. Electrical energy is supplied to the motor, in accordance. withwell-known practice, by wire 9 leading to a source of supply not shown;and a suitable switch I0 is interposed between the wire and the motor,so that the motor may be energized or de-energized whenever desired. Anexternal thread II is provided at the top of housing I and a circularopening I2 is formed in the wall of the housing I.

A frame I3 in which a screen I4 is secured, is removably supportedwithin the opening I2 against the annular seat I5 provided adjacent thecircumference of opening I2. Annular groove I6 is formed within thehousing as best shown in, Figure 5, and a retention wire I! is seatedtherein, so that it rests against the frame I3.

' In this manner the frame I3 is held securely opening I2.

' I9 in a manner shortly to be described. Casing I9 is threadedlysecured to housing I by means of internal thread 20.

An annular internal flange 2| is formed immediately above the internalthread 20, providing between the top of the housing I and the flange 2|an annular space in which the periphery 22 of the disk fan 23 ispositioned. The diameter of the disk fan is minutely less than thediameter of the annular space heretofore referred to. The slighttolerance therebetween avoids friction and, in keeping the periphery ofthe fan confined as stated, vibration is reduced to a minimum. The diskfan 23 is secured to the armature shaft I in any desirable manner andthe blades 24, punched out from the disk,

are inclined at an angle to induce a suction of the air contained withintheinterior I8 to thereby draw into the interior'of the casing the cuthair and to drive said air toward the screen I4 to be exhausted throughsaid screen and thus trap the cut hair.

The armature shaft '7 extends for a substantial distance upwardly untilits end 25 is confined within the jeweled bearing 26 disposed in the topof easing I9. 1

For the purpose of translating the rotative motion of shaft l to thedesired reciprocatory motion necessary to actuate the cutting blade soonto be described, an eccentric 2'? is secured to the armature shaft 7 asshown in Figure 6 and an arm 28 is pivotally secured to the casing I9 inany desirable manner, as by shaft 29 confined in journal brackets 30 and3I. An ovalshaped opening 32 isformed in arm 28 and this openingencircles the eccentric 2! which rides upon the inner wall 33 of opening32. The degree of horizontal reciprocation is controlled by the size ofthe eccentric and of the opening;

and the speed of reciprocation is, of course, controlled by the motorsspeed of rotation. A pair of tapered fingers 34 and 35 project from thecorners of the end 36. The tapered fingers 34 and 35 fit into V-shapedgrooves 31 and 38 formed in blocks 39 and 40 respectively. These blocksare secured to or are an integral part of the cutting blade, designatedgenerally by reference character A. By this construction theimperceptible arc described by the arm 28 as it is reciprocated does notaffect the horizontal movement of the blade A as it in turn isreciprocated by the arm 29 since the connection between the arm andblade is not tight fitting but ample tolerance is allowed between thetapered fingers and the grooves in the blocks.

The cutting blade A, made of case-hardened metal to resist wear, andbest shown in Figure 3, possesses a base 4|. An arcuatelyshaped wall 42,in which a plurality of elongated, vertical slots 43 are formed, extendsupwardly from the base. The outer faces of the vertical bars 44, createdfrom the formation of the slots 43, are provided with sharp cuttingfaces which efficiently sever the hair in a manner soon to be related. Aledge 45 is formed on top of the wall 42 and extends inwardly therefromand is disposed in parallel .relation to base 4I. Another vertical wall46, offset from wall 42 and extending upwardly from ledge 45, has a pairof spaced rectangular openings 41 and 48 formed therethrough. Aplurality of shearing fingers 49 extend upwardly and rearwardly from thetop of wall 46, forming therebetween a plurality of open-ended slots 50.The working faces of these fingers are also sharpened and are adapted-toclip hair presented thereto. This completes the description of thestructural details of the cutting blade A. Its position and relation tothe stationary head, not yet described, and its mode of operation, willshortly be stated.

The stationary head, designated generally by reference character B, isbest shown in Figure 2. Head B is made of case-hardened metal to resistwear and has a base 5|. A flange 52 extends upwardly from the base andhas a pair of open slots 53 and 54 disposed in spaced relation to eachother and T-shaped in cross section. An arcuately shaped wall 55, havingperforations 56 substantially throughout its area, extends upwardly frombase 5|. The contours of wall 55 are substantially identical to thecontours of wall 42, but its height and its width is slightly greaterthan the height and width of wall 42 Furthermore, the width of the base5| disposed between flange 52 and wall is slightly greater than thewidth of base M of cutting blade A.

The area designated by reference numeral 51 forms a seat for base 4|,when wall 42 of blade A is placed against the inner face of wall 55 ofstationary head B. Stationary head B has inwardly extending flange 58formed at the top of wall 55 and its width is slightly less than thewidth of ledge 45. A plurality of rearwardly inclined, inverted L-shapedfingers 59 extend A pair of guide and retaining lugs 64 and 65 extendfrom the flange 58 in spaced parallel relationship to each other.Rectangular grooves 66 and 61 are formed at the bottom of lugs 64 and 65respectively. The width of lugs 64 and 65 is materially less than thewidth of slots 41 and 46 formed in cutting blade A in which these lugsare respectively inserted. Furthermore the height of the slots 41 and 48is slightly greater than that of the lugs. The advisability of theseprovisions will shortly become apparent. A locking plate 68 extends fromthe bar 6|. This completes the detailedndescription of the structuralcharacteristics of stationary head B.

The cutter blade A must first be placed in position to coact withstationary blade B before the stationary blade B is secured to casingl9.

This is accomplished by placing fingers 49 under bar 6| and into track62, while at the same time inserting lugs 64 and 65 into slots 41 and48. When this is accomplished, the base 4| is'fitted into the space 51,so that it rests upon the base 5| of stationary head B. When cuttingblade A is thus fitted into stationary head B, the assembled unit isready for" connection to the casing I 9.

Before explaining the manner of securing the assembled unit to thecasing, it is desirable to point out additional structuralcharacteristics possessed by casing i 9. Casing l9 has a pair ofT-shaped wings 69, only one of which is shown in Figure 1, extendingoutwai'dly from the end 18. These wings are positioned so that theopen-ended slots 53 and 54 are in registerable alignment therewith. Apair of arms 1|, only one of which is shown in Figure 1, each having agroove 12 into which the wall formed by groove 68 and 61 fits when theassembled unit is positioned for operation, extends from the sides ofthe casing. A groove 18 is formed on the top 15 of easing l9 and plate68 fits therein. A slidably disposed locking plate 16, whose movementmay berestricted by threaded member 11, is adapted for covering plate68, when it is placed within the groove 13. To assemble the unit formedby cutting blade A and head B, so that the cutting blade A may bereciprocated by arm 28, the open-ended slots 53 and 54 are first placedin registerable alignment with the T-shaped 0 wings 69 and the plate 68is placed in registerable alignment with groove 13. These elements thenare slipped into their respective places and the locking plate 16 islocked against the plate 68. It will be seen that the space formedbetween the two arms 1| communicates with the compartment 18 formed whenthe assembled unit is placed in operative connection on casing l9. Inthis manner the hair clipped by the action ef the fingers 49 and 59falls and is drawn into the interior H! by fan 23. Once the unit formedby cutting blade A and stationary head B is secured to casing l9 asexplained, the razor is ready for operation. It is evident that, whenthe motor is energized, the shaft 1 will be rotated and the arm 28 willbe reciprocated; and since the arm 28 has, its tapered fingers 34 and 35positioned in the tapered grooves 31 and 38 respectively secured to thecutting blade A, the 7 cutting blade A will also be reciprocated, sothat its wall 42 and its fingers 49 will rapidly move in workingrelation. agamst wall 55 and fingers 59 respectively of stationary headB. Thus any. hair which enters into the perforations 56 or slots 68 willbe severed by bars 44 or by fingers 49 of cutting blade A and when thehair is thus severed the rotation of fan 23 will draw the cut hair intothe interior l8 and toward the creen l4. When it is desired to clean thecutter blade A and stationary head B it is necessary only to disengagethe threaded member 11, so that the locking plate 16 may be removed fromblade'66. Once this is done, the assembled unit may be removed andcleaned. When the screen I4 is found to be well covered with cut hair,it may be easily removed, cleaned, and reinserted. r

In Figure 8 is shown a slightly modified type of arm 28 which performsthe same function as the arm shown in Figure 6. The only materialdifference is in the manner of securing the arm for reciprocation. Vsex-ting a shaft 19 through the approximately central portion of the arm28 and journaling the shaft in any well-known manner within casing IS.The yoke 32 remains the same and the arm operates (in the identicalmanner as thearm shown in Figure 6 and heretofore described in detail.

From the foregoing description, it will undoubtedly appear that theinvention as described satisfies the objects and points out theadvantages inherent in the invention, and while the same has beendescribed in connection with a preferred embodiment of the invention, itshould .be understood that variants thereof are possible to thoseskilled in the art. The invention, therefore, in its broader aspect, isnot limited to the specific construction herein disclosed and describedsince changes and alterations may be made therein without departing fromthe spirit of the invention as claimed in the appended claims.

Having thus described my invention, what I claim as new and upon which Idesire to secure Letters Patent is:

l. A razor of the class described, comprising a motor housing, "saidhousing having an opening formed through its wall, a casing threadablysecured to said motor housing, a motor shaft extending upwardly from themotor housing and journaled within said casing, an induction fan securedto said shaft and rotatably disposed within saidcasing, means removablydisposed within the opening of said motor housing adapted to retain thecut hair within said casing without interferin'gwith the normal fiow ofair caused by the fan, a perforated and multi-slotted stationary headremovably securedto said casing, said stationary head comprising a base,an arcuately disposed wall extending upwardly theresaid bar.

2. Arazorof the class described, comprising a motor housing, saidhousing having an opening formed through its wall, a casing threadablysecured tosaid motor housing, a motor shaft extending upwardly from themotor housing and journaled 'withinsaid casing, an induction fan securedto said shaft and rotatablydisposed within said casing, means removablydisposed within This is accomplished by inthe opening of said motorhousing adapted to retain the cut hair within said casing withoutinterfering with the normal flow of air caused by the fan, a perforatedand multi-slotted stationary head removably secured to said casing,means for securing said head to said casing, a cutting blade associatedwith said head and movable transversely thereto to thereby periodicallymove back and forth across the perforations and slots in said head forcutting facial hairs from the skin, said cutter blade comprising a base,an arcuately-shaped wall extending upwardly therefrom, said wall havinga plurality of vertically extending slots therein to form cutting barstherebetween, a ledge extending inwardly from the top of said wall,another wall extending upwardly from said ledge, said wall having a pairof rectangular openings therethrough, a plurality of rearwardly inclinedshearing fingers extending from the top of said wall, and a pair ofV-grooved blocks secured to said last-mentioned wall.

3. A stationary head to be used with a razorof the class described,comprising, a base, an arcuately disposed wall extending upwardlytherefrom, said wall having a plurality of periorations therethrough, aflange extending upwardly from said base, said flange having a pair ofT-shaped open-ended slots, another flange extending inwardly from saidwall, a plurality of rearwardly inclined inverted L-sha'ped fingersextending from said flange, a bar disposed transversely of and at theextreme ends of said fingers, said bar and the ends of said fingersforming a trackway, a pair of guide and retaining lugs extending fromsaid flange, and a locking plate extending from said bar.

4. A cutter blade to be used with a razor of the class described,comprising, a base, an arcuatelyshaped wall extending upwardlytherefrom, said wall having a plurality of vertically extending slotstherein to form cutting bars therebetween, a ledge extending inwardlyfrom the top of said wall, another wall extending upwardly from saidledge, said wall having a pair of rectangular openings therethrough, aplurality of rearwardly inclined shearing fingers extending from the topof said wall, and a pair of V-grooved blocks secured to saidlast-mentioned wall.

EUGENE FAVELUKE.

